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
69 + 10 = ______
39 + 20 = ______
22 − 10 = ______
30 + 10 = ______
8 × 10 = ______
60 − 10 = ______
4 × 10 = ______
27 + 20 = ______
25 + 20 = ______
5 × 10 = ______
40 + 20 = ______
50 + 20 = ______
6 × 10 = ______
70 + 20 = ______
68 + 20 = ______
36 − 10 = ______
58 − 10 = ______
66 + 20 = ______
23 + 20 = ______
1 × 10 = ______
