Matemáticas mentales Worksheet
Recommended for 1er grado — 5to grado
Matemáticas mentales Worksheet
Name: ____________________Date: ____________
Instructions: Usar estrategias mentales como sumar diez, duplicar y compensar para calcular rápidamente.
20 problems
9 × 10 = ______
18 + 20 = ______
83 + 10 = ______
62 + 20 = ______
41 + 20 = ______
88 + 20 = ______
3 × 10 = ______
68 + 20 = ______
24 − 10 = ______
86 − 10 = ______
23 + 20 = ______
53 + 10 = ______
7 × 10 = ______
47 − 10 = ______
6 × 10 = ______
54 − 10 = ______
69 − 10 = ______
16 + 10 = ______
88 − 10 = ______
15 + 10 = ______
