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
69 + 10 = ______
5 × 10 = ______
92 − 10 = ______
1 × 10 = ______
31 + 10 = ______
7 × 10 = ______
62 + 20 = ______
47 + 20 = ______
87 + 10 = ______
29 + 20 = ______
81 − 10 = ______
53 + 10 = ______
88 + 20 = ______
88 − 10 = ______
9 × 10 = ______
8 × 10 = ______
28 + 20 = ______
41 − 10 = ______
85 + 10 = ______
71 − 10 = ______
