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
51 + 10 = ______
1 × 10 = ______
16 + 10 = ______
72 − 10 = ______
36 + 10 = ______
30 − 10 = ______
27 − 10 = ______
58 − 10 = ______
4 × 10 = ______
70 + 10 = ______
90 − 10 = ______
70 + 20 = ______
6 × 10 = ______
50 + 20 = ______
75 − 10 = ______
41 + 20 = ______
14 + 20 = ______
39 + 20 = ______
88 − 10 = ______
9 × 10 = ______
