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
42 + 20 = ______
1 × 10 = ______
89 + 20 = ______
45 − 10 = ______
68 − 10 = ______
6 × 10 = ______
68 + 20 = ______
36 + 20 = ______
88 + 10 = ______
7 × 10 = ______
60 + 20 = ______
76 − 10 = ______
8 × 10 = ______
5 × 10 = ______
40 + 10 = ______
3 × 10 = ______
84 + 20 = ______
55 − 10 = ______
30 + 10 = ______
30 + 20 = ______
