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
4 × 10 = ______
58 − 10 = ______
8 × 10 = ______
11 + 20 = ______
99 − 10 = ______
7 × 10 = ______
81 + 10 = ______
55 − 10 = ______
30 + 10 = ______
77 − 10 = ______
85 − 10 = ______
56 + 20 = ______
33 + 10 = ______
15 + 20 = ______
9 × 10 = ______
6 × 10 = ______
49 + 20 = ______
23 + 10 = ______
71 + 20 = ______
22 + 10 = ______
