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
29 + 20 = ______
26 + 10 = ______
5 × 10 = ______
76 + 10 = ______
40 + 20 = ______
1 × 10 = ______
68 − 10 = ______
34 − 10 = ______
55 − 10 = ______
9 × 10 = ______
8 × 10 = ______
54 + 10 = ______
67 + 20 = ______
73 + 10 = ______
98 − 10 = ______
56 + 20 = ______
45 + 20 = ______
88 + 20 = ______
85 − 10 = ______
79 + 10 = ______
