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
23 + 20 = ______
39 + 10 = ______
51 + 10 = ______
60 − 10 = ______
4 × 10 = ______
5 × 10 = ______
2 × 10 = ______
1 × 10 = ______
19 + 10 = ______
55 + 10 = ______
22 + 10 = ______
97 − 10 = ______
99 − 10 = ______
11 + 10 = ______
13 + 20 = ______
79 + 20 = ______
9 × 10 = ______
85 − 10 = ______
83 + 10 = ______
20 + 10 = ______
