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
7 × 10 = ______
8 × 10 = ______
63 − 10 = ______
9 × 10 = ______
73 − 10 = ______
14 + 20 = ______
26 + 10 = ______
4 × 10 = ______
51 + 20 = ______
2 × 10 = ______
85 − 10 = ______
79 + 20 = ______
40 + 10 = ______
3 × 10 = ______
39 + 10 = ______
67 + 20 = ______
76 − 10 = ______
86 + 10 = ______
72 + 10 = ______
88 − 10 = ______
