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
43 + 20 = ______
5 × 10 = ______
23 − 10 = ______
1 × 10 = ______
74 + 20 = ______
2 × 10 = ______
94 − 10 = ______
6 × 10 = ______
40 + 10 = ______
11 + 10 = ______
54 − 10 = ______
85 − 10 = ______
9 × 10 = ______
13 + 20 = ______
71 + 10 = ______
39 + 10 = ______
38 + 20 = ______
33 − 10 = ______
73 − 10 = ______
45 + 10 = ______
