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
64 + 10 = ______
27 − 10 = ______
31 + 20 = ______
61 + 20 = ______
5 × 10 = ______
99 − 10 = ______
3 × 10 = ______
4 × 10 = ______
69 + 10 = ______
81 + 10 = ______
81 + 20 = ______
36 + 10 = ______
87 − 10 = ______
16 + 10 = ______
9 × 10 = ______
2 × 10 = ______
60 − 10 = ______
41 − 10 = ______
79 − 10 = ______
6 × 10 = ______
