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
77 − 10 = ______
26 − 10 = ______
23 + 20 = ______
34 + 20 = ______
61 − 10 = ______
5 × 10 = ______
15 + 10 = ______
70 − 10 = ______
3 × 10 = ______
50 + 20 = ______
66 + 20 = ______
85 − 10 = ______
26 + 10 = ______
8 × 10 = ______
44 + 10 = ______
72 + 10 = ______
30 − 10 = ______
4 × 10 = ______
77 + 20 = ______
31 + 20 = ______
