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
1 × 10 = ______
22 − 10 = ______
34 − 10 = ______
2 × 10 = ______
5 × 10 = ______
27 + 10 = ______
15 + 20 = ______
99 − 10 = ______
88 − 10 = ______
4 × 10 = ______
66 − 10 = ______
78 + 20 = ______
75 − 10 = ______
6 × 10 = ______
35 + 10 = ______
86 + 20 = ______
24 − 10 = ______
9 × 10 = ______
7 × 10 = ______
46 + 20 = ______
